I'm not sure, if it's a Buddy's vette, I would say ask him if you can try it on your ride.
Or try what I do...I go on kragen.com & would check the oil cap on both cars & see if the reference/part # is the same, if so, you're in luck.
I do that all the time, I cross reference stuff.
Like SC300/SC400 & Supra. I compare to see if the brakes size are the same.
Good luck w/ it & if it works, post some pictures!!